A relationship between motor control and language development in an autistic child

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Abstract
Recent work in both experimental and clinical psychology indicates an important link exists between the development of motor control and language development. Diagnostic and therapeutic work with autistic children reveals a high incidence of gross motor dysfunction along with language deficits. A study to evaluate the effectiveness of behavior modification techniques in eliciting speech from nursery-age autistic children yielded new data to confirm the importance of the relationship. Results from a case study of one autistic child demonstrated that the child most frequently vocalized when motorically quiet, and engaged in motor activity when not speaking and especially prior to speech. Data from 30 half-hour behavior modification sessions and an intensive clinical interview indicated that limiting the child's gross motor activity was effective in increasing the frequency of vocalization. Several theoretical interpretations of this phenomenon as well as implications for treatment and further research are offered.